Glock 21 Review and Price

A Comprehensive Guide

Glock 21

Glock 21 Review

Specification Comparison and Reviews

In this article, we will discuss the Glock 21 review. The Glock 21 is a handgun manufactured by the Austrian company Glock. It was introduced in 1990. The Glock 21 has been used by various law enforcement agencies and militaries around the world and civilians.

Table of Contents

The Glock 21 offers the power of the .45 ACP in a standard package. It’s easy to handle, accurate and ideal for concealed carry or home defense. The standard model retails for around $500 to $600. The polymer frame allows the Glock 21 to be slim and lightweight yet still strong.

Features and Specifications - Glock 21 Review

Grip and Textures

The grip on the Glock 21 is designed to fit most hand sizes. The texturing on the grip helps to keep the gun in your hand, even when wet. The gun also has a reversible magazine release, so that left- and right-handed shooters can use it. There are three options for the grip size. This allows that Glock 21 to be used by different hand sizes or with different types of clothing. For example, you can use a larger grip if you are wearing bulky gloves in cold weather. The finger grooves on the grip assist you in getting a consistent shooting grip every time. Also, the finger grooves are congruent with the positioning of your hands when you grip the gun. This will help you shoot more effectively. The modular backstrap system on the Glock 21 allows you to adjust the grip size to better fit your hand. This is a great feature, as it means that almost everyone can find a comfortable grip on the gun.

Glock 21 Price and Review Grip and Textures

Size and Weight

The standard Glock 21 weighs in at 28.28r ounces with an unloaded magazine. The overall length of the gun is 8.07 inches, and the height is 5.51 inches. This makes it easy to carry around or to maneuver around obstacles, such as vehicles or furniture that might be placed in a hallway or room you are defending. The barrel length is 4.60 inches, and the magazine carries 13 rounds. This gives you more options when exploring places to hide it on your person, reducing the chances of being targeted/robbed.  The slide length is 7.60 inches, and the handgun is 1.34 inches at its widest point.


The polymer line of sight is 6.77 inches, while the steel line of sight is 6.73 inches long. The line of sight on the polymer Glock 21 is a little longer, but not by much.The Glock 21’s GNS sight radius measures 6.69 inches long. This makes it easier to transition between targets. It also helps with accuracy, and when fully seated in the holster of choice, you know that you will get a smooth draw motion every time.

Glock 21 Price and Review Size and Weight

Stopping Power

The stopping power on the Glock 21 is one of the major factors that makes it popular with many shooters. The magazine carries 13 rounds of .45 ACP ammunition. This allows you to stop your target quickly and humanely, reducing the follow-up shots needed by law enforcement or civilian defensive shootings. The muzzle velocity on the Glock 21 is 890 feet per second. This is faster than the average 9mm handgun. The recoil on the Glock 21 is also reduced, making it easier for follow-up shots. The Glock 21 is a powerful handgun that can allow you to fire off several rounds before needing to worry about re-loading. This makes it a great choice for anyone who wants an effective sidearm useful in different situations or environments.

Safety Features

The Glock 21 is an older model that does not have modern safety features, including a loaded chamber indicator. However, it isn’t necessary with this gun because of its double-action trigger design. The weight on the trigger pull is 5.5 pounds, so you will feel it when someone has pulled the trigger. You also have the option of choosing a manual thumb safety, firing pin safety, and drop safety. Some law enforcement units around the world use the Glock 21 as their standard sidearm. These units prefer the simplicity and reliability of the gun, even over modern handguns with upgraded features such as loaded chamber indicators or striker status indicators. The ‘Safe Action’ design of the Glock 21 is one of the things that makes it so popular for civilian and law enforcement use. The firing pin safety, drop safety, and trigger safety work together to reduce accidental discharges.

Glock 21 Price and Review Safety features

Slide Stop and Magazine Release

The Glock 21 has a slide stop and magazine release that is reversible. This is great for right-handed shooters who can easily reverse the controls with a screwdriver and small wrench, allowing them to make the proper adjustments. The magazine release on the standard Glock 21 runs parallel to the frame of the gun. It is not ambidextrous, but it is reversible. The slide stop release is also reversible, and both can be changed to accommodate left-handed shooters with a simple tool change by the gun owner. The magazine release on the Glock 21 is a little longer than some other models. This makes it easier to find and use, as does the shape of the release button, which allows shooters to drop magazines from their handguns, reducing reload time quickly.

Glock 21 Price and Review Slide Stop and Magazine Release

Recoil and Muzzle Flip

The recoil on the Glock 21 is reduced because of its polymer frame and the weight of the gun. This makes it easier for follow-up shots and people who are not used to shooting a handgun with some kick. The muzzle flip is also reduced, making it easier to keep your sights on target for accurate shots. The Glock 21 has a smooth, easy trigger pull with little take-up before the gun fires. Thanks to the ‘Safe Action’ design, which adds multiple redundancies to the firing mechanism. The low recoil and reduced muzzle flip on the Glock 21 make it an ideal choice for anyone who wants to learn how to shoot a handgun or for those who want an easy-to-shoot gun for personal defense.

Trigger Mechanism

The trigger mechanism on the Glock 21 is a double-action design. This means that the hammer or striker is cocked by the movement of the slide or bolt, rather than being cocked manually by the shooter for the first shot. This reduces the pressure needed to pull the trigger and makes it easier for shooters with less hand strength to fire the gun accurately. The double-action trigger design makes it safer for inexperienced shooters by requiring more force to pull the trigger and reducing accidental discharges.

Glock 21 Price and Review Trigger mechanism


The Glock 21 has a 4.60-inch barrel and is about 1.34 inches wide, making it small enough to conceal easily. It also weighs about 29.28 ounces, making it heavier than some other handguns but not so heavy that it becomes difficult to carry. The Glock 21 is a great choice for anyone who wants a concealable handgun that is also effective for self-defense or target shooting. It’s available in several different calibers, so finding one to suit your needs should be easy enough.


The Glock 21 is a reliable handgun that has been tested and proven in various situations. It’s often chosen by law enforcement officers and civilians alike for its dependability and ease of use. The ‘Safe Action’ design helps to ensure that the gun will fire when needed, making it a trusted choice for those who need a reliable handgun. The Glock 21 is also easy to clean and maintain, which helps to keep it running in top condition. This makes it a great option for anyone who wants a reliable handgun that they can use regularly.


The polymer frame helps to keep the weight of the Glock 21 down and makes it more durable than steel handguns. The design has also been tested in extreme conditions and circumstances, which helps to give this gun a reputation for being an extremely reliable choice. The durability of this pistol also ensures that it can be used regularly without issue.

Advantages - Glock 21 Review

The advantages of the Glock 21 include its dimensions, which help to make it more concealable than other handguns. Its durability is also an advantage, as is its reduced felt recoil and muzzle flip. The larger magazine capacity also makes this handgun a good choice for self-defense shooting scenarios.

Disadvantages - Glock 21 Review

The main disadvantages are that it’s not available in all calibers and that it has a heavier weight than some other handguns. The Glock 21 is also not as customizable as some other guns, which can be a disadvantage for some shooters.

Aftermarket Accessories - Glock 21 Review

There are a variety of different aftermarket accessories that can be used with the Glock 21. This includes sights, holsters, and trigger upgrades.


The Glock 21 comes standard with fixed sights, but various aftermarket sights can be installed on the gun. These include night sights, fiber-optic sights, and adjustable sights. Fiber optic sights are a great choice for those who want to see the front and rear sights in low-light conditions. It helps to increase the accuracy of the shooter and makes it easier to hit your target. The night sight is another great option that can improve the accuracy of the gun in low-light conditions. It’s especially useful if you want to make sure you can see your target regardless of lighting. Adjustable sights are a good choice for those who want to change the way their gun fires. They can be adjusted to fit different hand sizes, perfect if you have more than one shooter in your household.

Glock 21 Price and Review Sights


Lasers can be a great addition to the Glock 21. They give you an accurate way to aim the gun and have been known to decrease accuracy issues. Some models attach directly to the trigger guard, while others are placed under the barrel. You can also find models that fit on the grip of the gun, which makes it easy to access and use. It’s important to note that different lasers will work better on some guns than others. Make sure you research the different lasers and find one that will fit your needs before purchasing and installing it on your gun.


Another great accessory to consider is a flashlight. It can help you see your target in low-light conditions and make it easier to identify potential threats. There are various flashlights available for the Glock 21, so finding one that will work for your needs should be easy. Just like with lasers, you’ll want to make sure that you find a flashlight that fits your gun specifically before purchasing it. Most models are designed to fit some but not all guns.

Glock 21 Price and Review Flashlights


The Glock 21 has a fairly basic design, but there are different colored grip panels available for the gun, which can help it stand out more. Grip panels are usually made of rubberized plastic and are easy to install on the gun. They can also help improve the gun’s grip, which can be helpful if you plan on shooting it for an extended period.

There are also a variety of different companies that make aftermarket grips for the Glock 21. This includes wood grips, carbon fiber grips, and metal grips. If you want to change the appearance of your gun, a new set of grips can be a great way to do it.


If you want to carry your gun more easily, consider getting a sling for it. It will allow you to attach the gun securely to your body and prevent it from being dropped or lost. Slings are available in different materials, so finding one that matches your needs should be easy.   Slings can also make it easier to shoot your gun, which is why it’s a good idea for hunters to have them. They can be used in place of straps, which are much more difficult to use while shooting.


You’ll need to purchase different Glock 21 magazines to increase the number of bullets that the gun can hold. The standard magazine has a capacity of 12 rounds, but there are extended magazines available that allow for more shots per reload. There are also different materials that magazines can be made out of. You may prefer one material over another because it’s easier to handle or more durable. It’s important to remember that every gun will have a specific magazine designed for it, so you’ll need to do some research before purchasing extra ones.

Glock 21 Price and Review Magazines

Magazine Pouches

Having magazine pouches designed to carry the magazine for your Glock 21 can be useful if you’d rather not have to carry it in your hand. The material for these pouches is usually made of cloth or nylon, so it’s important to consider how you want to take care of them before purchasing. Extra magazines and pouches can be a great way to keep your gun ready to use at all times, which is why they’re popular among law enforcement and military personnel.


If you require a holster for your Glock 21, many different designs can be used. Some will attach directly to the belt, while others can fit inside pockets or other areas on the body. These types of holsters should fit well and ensure that your gun does not get lost. It’s important to note that not all designs will be right for everyone, so it’s important to research before purchasing one. There are also a variety of different materials that holsters can be made out of. You may like one fabric over another because it is more comfortable or easier to care for. Like with other accessories, it’s important to find a holster designed specifically for your gun.

Premium steerhide; Full slide/barrel coverage; Butt-forward cant; Traditional pancake design; Fits belts up to 1 3/4"; Black Color
in stock
GALCO Combat Master for Glock 21 Right Hand Leather Belt...
Orients its open-front magazine carrier in a horizontal position; All four points of spider harness pivot independently; Points of the spider harness are connected by unique clover shaped Flexalon swivel back plate; Perfect fit and lasting comfort for all
out of stock
GALCO Miami Classic II for Glock 21 Right Hand Leather...


The Glock 21 is a great gun for people who are looking for a reliable and durable weapon. It’s easy to use and can be customized with different accessories.

Yes, many different types of holsters can be used with the Glock 21. You should be able to find one that fits your needs and preferences.

No, the Glock 21 is not a fully automatic weapon. It is a semi-automatic pistol.

The standard magazine for the Glock 21 holds 13 rounds, but extended magazines are available that hold more.


In this Glock 21 price and review, we talked about the Glock 21’s composition, different types of accessories you can purchase, and frequently asked questions. We also gave a brief but comprehensive review of the Glock 21 here in this article. We hope this has been helpful for everyone looking to get a gun of their own.

Author Profile

Gabriel Tackett
Double major in Engineering and Geology at the University of Minnesota. Experienced shooter & hunter for over 15 years. Certified NRA officer for over 10 years working as a writer at .

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